The urgent requirement of the sustainable computing determines that many security assurance protocols are designed with low computational cost. The design of the sustainable cloud storage auditing protocol is an attractive research filed in the security community. As we all know, secret keys of the data storage auditing in the cloud system are very sensitive. To enhance the security of the cloud data storage auditing, some studies focused on the research of key updates. In this paper, we propose a secure sustainable storage auditing protocol that can support key updates for clients in cloud computing. In order to alleviate the high overhead of key updates at the local side, the partial key update tasks are outsourced to the TPA. Moreover, clients can verify the validity of the new updated keys by using the technology of the BLS signature. The security analysis shows that the proposed protocol can provide the security properties of the correctness, the verifiability and the accountability. Compared to previous studies, the proposed protocol is more efficient which is very suitable for the real-world sustainable cloud storage auditing.

可持续计算的迫切需求决定了许多安全保证协议的设计成本较低。可持续的云存储审核协议的设计是安全界备受关注的一项有吸引力的研究。众所周知，云系统中数据存储审计的秘密密钥非常敏感。为了增强云数据存储审计的安全性，一些研究集中在关键更新的研究上。在本文中，我们提出了一种安全的，可持续的存储审核协议，该协议可以支持云计算中客户端的关键更新。为了减轻本地密钥更新的高开销，将部分密钥更新任务外包给TPA。此外，客户可以使用BLS签名技术来验证新更新密钥的有效性。安全分析表明，所提出的协议可以提供正确性，可验证性和可问责性的安全性。与以前的研究相比，该协议更加有效，非常适合于现实世界中可持续的云存储审计。